# Regular Expression or Regexp syntax

**URL:** <https://forums.percona.com/t/regular-expression-or-regexp-syntax/4760>\
**Category:** Percona XtraBackup\
**Created:** [March 7, 2016, 2:54pm UTC](https://forums.percona.com/t/regular-expression-or-regexp-syntax/4760 "2016-03-07T14:54:26Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![pnkdoshi](https://avatars.discourse-cdn.com/v4/letter/p/a6a055/32.png) [@pnkdoshi](https://forums.percona.com/u/pnkdoshi)\
**Post date:** [March 7, 2016, 2:54pm UTC](https://forums.percona.com/t/regular-expression-or-regexp-syntax/4760/1 "2016-03-07T14:54:26Z")

</div>

Hi all,  
I am relativity new to this product and going through some of the pains of understanding the initial setup.So I am probably going to ask some very basic questions.

Regular Expressions are their own language. I am having a hard time making something simple work. The below is a command I am using and at one point I had this working to backup just the one db. Now I cant get it to run properly. Also, if I need to do two schemas, how do I do that?

innobackupex --defaults-file=xxxx --login-path=xxxx --no-timestamp --include=’^mysql[.]/’ /tmp//xtrabackup/Monday/ #One  
innobackupex --defaults-file=xxxx --login-path=xxxx --no-timestamp --include=’^(mysql[.]|information\_schema[.])/’ /tmp//xtrabackup/Monday/ #Two?

---

<div class="post-metadata">

**Author:** ![pnkdoshi](https://avatars.discourse-cdn.com/v4/letter/p/a6a055/32.png) [@pnkdoshi](https://forums.percona.com/u/pnkdoshi)\
**Post date:** [April 28, 2016, 11:56am UTC](https://forums.percona.com/t/regular-expression-or-regexp-syntax/4760/2 "2016-04-28T11:56:30Z")

</div>

Just curious if anyone has any experience with this.